src/edu/internet2/middleware/shibboleth/common/ServiceProviderMapper.java

   1 /*
   2  * The Shibboleth License, Version 1. Copyright (c) 2002 University Corporation for Advanced Internet Development, Inc.
   3  * All rights reserved Redistribution and use in source and binary forms, with or without modification, are permitted
   4  * provided that the following conditions are met: Redistributions of source code must retain the above copyright
   5  * notice, this list of conditions and the following disclaimer. Redistributions in binary form must reproduce the above
   6  * copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials
   7  * provided with the distribution, if any, must include the following acknowledgment: "This product includes software
   8  * developed by the University Corporation for Advanced Internet Development <http://www.ucaid.edu> Internet2 Project.
   9  * Alternately, this acknowledegement may appear in the software itself, if and wherever such third-party
  10  * acknowledgments normally appear. Neither the name of Shibboleth nor the names of its contributors, nor Internet2, nor
  11  * the University Corporation for Advanced Internet Development, Inc., nor UCAID may be used to endorse or promote
  12  * products derived from this software without specific prior written permission. For written permission, please contact
  13  * shibboleth@shibboleth.org Products derived from this software may not be called Shibboleth, Internet2, UCAID, or the
  14  * University Corporation for Advanced Internet Development, nor may Shibboleth appear in their name, without prior
  15  * written permission of the University Corporation for Advanced Internet Development. THIS SOFTWARE IS PROVIDED BY THE
  16  * COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND WITH ALL FAULTS. ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  17  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT ARE
  18  * DISCLAIMED AND THE ENTIRE RISK OF SATISFACTORY QUALITY, PERFORMANCE, ACCURACY, AND EFFORT IS WITH LICENSEE. IN NO
  19  * EVENT SHALL THE COPYRIGHT OWNER, CONTRIBUTORS OR THE UNIVERSITY CORPORATION FOR ADVANCED INTERNET DEVELOPMENT, INC.
  20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  21  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
  23  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 package edu.internet2.middleware.shibboleth.common;
  27
  28 import java.net.MalformedURLException;
  29 import java.net.URI;
  30 import java.net.URISyntaxException;
  31 import java.net.URL;
  32 import java.util.HashMap;
  33 import java.util.Map;
  34
  35 import org.apache.log4j.Logger;
  36 import org.w3c.dom.Element;
  37 import org.w3c.dom.NodeList;
  38
  39 import edu.internet2.middleware.shibboleth.idp.IdPConfig;
  40 import edu.internet2.middleware.shibboleth.metadata.Metadata;
  41 import edu.internet2.middleware.shibboleth.metadata.Provider;
  42
  43 /**
  44  * Class for determining the effective relying party from the unique id of the service provider. Checks first for an
  45  * exact match on the service provider, then for membership in a federation. Uses the default relying party if neither
  46  * is found.
  47  *
  48  * @author Walter Hoehn
  49  */
  50 public class ServiceProviderMapper {
  51
  52         private static Logger log = Logger.getLogger(ServiceProviderMapper.class.getName());
  53         protected Map relyingParties = new HashMap();
  54         private Metadata metaData;
  55         private IdPConfig configuration;
  56         private Credentials credentials;
  57         private NameMapper nameMapper;
  58
  59         public ServiceProviderMapper(Element rawConfig, IdPConfig configuration, Credentials credentials,
  60                         NameMapper nameMapper, Metadata metaData) throws ServiceProviderMapperException {
  61
  62                 this.metaData = metaData;
  63                 this.configuration = configuration;
  64                 this.credentials = credentials;
  65                 this.nameMapper = nameMapper;
  66
  67                 NodeList itemElements = rawConfig.getElementsByTagNameNS(IdPConfig.originConfigNamespace, "RelyingParty");
  68
  69                 for (int i = 0; i < itemElements.getLength(); i++) {
  70                         addRelyingParty((Element) itemElements.item(i));
  71                 }
  72
  73                 verifyDefaultParty(configuration);
  74
  75         }
  76
  77         private IdPConfig getOriginConfig() {
  78
  79                 return configuration;
  80         }
  81
  82         protected void verifyDefaultParty(IdPConfig configuration) throws ServiceProviderMapperException {
  83
  84                 // Verify we have a proper default party
  85                 String defaultParty = configuration.getDefaultRelyingPartyName();
  86                 if (defaultParty == null || defaultParty.equals("")) {
  87                         if (relyingParties.size() != 1) {
  88                                 log
  89                                                 .error("Default Relying Party not specified.  Add a (defaultRelyingParty) attribute to <IdPConfig>.");
  90                                 throw new ServiceProviderMapperException("Required configuration not specified.");
  91                         } else {
  92                                 log.debug("Only one Relying Party loaded.  Using this as the default.");
  93                         }
  94                 }
  95                 log.debug("Default Relying Party set to: (" + defaultParty + ").");
  96                 if (!relyingParties.containsKey(defaultParty)) {
  97                         log.error("Default Relying Party refers to a Relying Party that has not been loaded.");
  98                         throw new ServiceProviderMapperException("Invalid configuration (Default Relying Party).");
  99                 }
 100         }
 101
 102         protected RelyingParty getRelyingPartyImpl(String providerIdFromTarget) {
 103
 104                 // Null request, send the default
 105                 if (providerIdFromTarget == null) {
 106                         RelyingParty relyingParty = getDefaultRelyingParty();
 107                         log.info("Using default Relying Party: (" + relyingParty.getName() + ").");
 108                         return new UnknownProviderWrapper(relyingParty, providerIdFromTarget);
 109                 }
 110
 111                 // Look for a configuration for the specific relying party
 112                 if (relyingParties.containsKey(providerIdFromTarget)) {
 113                         log.info("Found Relying Party for (" + providerIdFromTarget + ").");
 114                         return (RelyingParty) relyingParties.get(providerIdFromTarget);
 115                 }
 116
 117                 // Next, check to see if the relying party is in any groups
 118                 RelyingParty groupParty = findRelyingPartyByGroup(providerIdFromTarget);
 119                 if (groupParty != null) {
 120                         log.info("Provider is a member of Relying Party (" + groupParty.getName() + ").");
 121                         return new RelyingPartyGroupWrapper(groupParty, providerIdFromTarget);
 122                 }
 123
 124                 // OK, we can't find it... just send the default
 125                 RelyingParty relyingParty = getDefaultRelyingParty();
 126                 log.info("Could not locate Relying Party configuration for (" + providerIdFromTarget
 127                                 + ").  Using default Relying Party: (" + relyingParty.getName() + ").");
 128                 return new UnknownProviderWrapper(relyingParty, providerIdFromTarget);
 129         }
 130
 131         private RelyingParty findRelyingPartyByGroup(String providerIdFromTarget) {
 132
 133                 Provider provider = metaData.lookup(providerIdFromTarget);
 134                 if (provider != null) {
 135                         String[] groups = provider.getGroups();
 136                         for (int i = 0; groups.length > i; i++) {
 137                                 // We need to iterate backward because the groups go from least to most specific
 138                                 String group = groups[groups.length - 1 - i];
 139                                 if (relyingParties.containsKey(group)) {
 140                                         log.info("Found matching Relying Party for group (" + group + ").");
 141                                         return (RelyingParty) relyingParties.get(group);
 142                                 } else {
 143                                         log
 144                                                         .debug("Provider is a member of group (" + group
 145                                                                         + "), but no matching Relying Party was found.");
 146                                 }
 147                         }
 148                 }
 149                 return null;
 150         }
 151
 152         public RelyingParty getDefaultRelyingParty() {
 153
 154                 // If there is no explicit default, pick the single configured Relying
 155                 // Party
 156                 String defaultParty = getOriginConfig().getDefaultRelyingPartyName();
 157                 if (defaultParty == null || defaultParty.equals("")) { return (RelyingParty) relyingParties.values().iterator()
 158                                 .next(); }
 159
 160                 // If we do have a default specified, use it...
 161                 return (RelyingParty) relyingParties.get(defaultParty);
 162         }
 163
 164         /**
 165          * Returns the relying party for a legacy provider(the default)
 166          */
 167         public RelyingParty getLegacyRelyingParty() {
 168
 169                 RelyingParty relyingParty = getDefaultRelyingParty();
 170                 log.info("Request is from legacy shib target.  Selecting default Relying Party: (" + relyingParty.getName()
 171                                 + ").");
 172                 return new LegacyWrapper((RelyingParty) relyingParty);
 173
 174         }
 175
 176         /**
 177          * Returns the appropriate relying party for the supplied service provider id.
 178          */
 179         public RelyingParty getRelyingParty(String providerIdFromTarget) {
 180
 181                 if (providerIdFromTarget == null || providerIdFromTarget.equals("")) {
 182                         RelyingParty relyingParty = getDefaultRelyingParty();
 183                         log.info("Selecting default Relying Party: (" + relyingParty.getName() + ").");
 184                         return new NoMetadataWrapper((RelyingParty) relyingParty);
 185                 }
 186
 187                 return (RelyingParty) getRelyingPartyImpl(providerIdFromTarget);
 188         }
 189
 190         private void addRelyingParty(Element e) throws ServiceProviderMapperException {
 191
 192                 log.debug("Found a Relying Party.");
 193                 try {
 194                         if (e.getLocalName().equals("RelyingParty")) {
 195                                 RelyingParty party = new RelyingPartyImpl(e, configuration, credentials, nameMapper);
 196                                 log.debug("Relying Party (" + party.getName() + ") loaded.");
 197                                 relyingParties.put(party.getName(), party);
 198                         }
 199                 } catch (ServiceProviderMapperException exc) {
 200                         log.error("Encountered an error while attempting to load Relying Party configuration.  Skipping...");
 201                 }
 202
 203         }
 204
 205         /**
 206          * Base relying party implementation.
 207          *
 208          * @author Walter Hoehn
 209          */
 210         protected class RelyingPartyImpl implements RelyingParty {
 211
 212                 private RelyingPartyIdentityProvider identityProvider;
 213                 private String name;
 214                 private String overridenOriginProviderId;
 215                 private URL overridenAAUrl;
 216                 private URI overridenDefaultAuthMethod;
 217                 private String hsNameFormatId;
 218                 private IdPConfig configuration;
 219                 private boolean overridenPassThruErrors = false;
 220                 private boolean passThruIsOverriden = false;
 221
 222                 public RelyingPartyImpl(Element partyConfig, IdPConfig globalConfig, Credentials credentials,
 223                                 NameMapper nameMapper) throws ServiceProviderMapperException {
 224
 225                         configuration = globalConfig;
 226
 227                         // Get party name
 228                         name = ((Element) partyConfig).getAttribute("name");
 229                         if (name == null || name.equals("")) {
 230                                 log.error("Relying Party name not set.  Add a (name) attribute to <RelyingParty>.");
 231                                 throw new ServiceProviderMapperException("Required configuration not specified.");
 232                         }
 233                         log.debug("Loading Relying Party: (" + name + ").");
 234
 235                         // Process overrides for global configuration data
 236                         String attribute = ((Element) partyConfig).getAttribute("providerId");
 237                         if (attribute != null && !attribute.equals("")) {
 238                                 log.debug("Overriding providerId for Relying Pary (" + name + ") with (" + attribute + ").");
 239                                 overridenOriginProviderId = attribute;
 240                         }
 241
 242                         attribute = ((Element) partyConfig).getAttribute("AAUrl");
 243                         if (attribute != null && !attribute.equals("")) {
 244                                 log.debug("Overriding AAUrl for Relying Pary (" + name + ") with (" + attribute + ").");
 245                                 try {
 246                                         overridenAAUrl = new URL(attribute);
 247                                 } catch (MalformedURLException e) {
 248                                         log.error("(AAUrl) attribute to is not a valid URL.");
 249                                         throw new ServiceProviderMapperException("Configuration is invalid.");
 250                                 }
 251                         }
 252
 253                         attribute = ((Element) partyConfig).getAttribute("defaultAuthMethod");
 254                         if (attribute != null && !attribute.equals("")) {
 255                                 log.debug("Overriding defaultAuthMethod for Relying Pary (" + name + ") with (" + attribute + ").");
 256                                 try {
 257                                         overridenDefaultAuthMethod = new URI(attribute);
 258                                 } catch (URISyntaxException e1) {
 259                                         log.error("(defaultAuthMethod) attribute to is not a valid URI.");
 260                                         throw new ServiceProviderMapperException("Configuration is invalid.");
 261                                 }
 262                         }
 263
 264                         attribute = ((Element) partyConfig).getAttribute("passThruErrors");
 265                         if (attribute != null && !attribute.equals("")) {
 266                                 log.debug("Overriding passThruErrors for Relying Pary (" + name + ") with (" + attribute + ").");
 267                                 overridenPassThruErrors = Boolean.valueOf(attribute).booleanValue();
 268                                 passThruIsOverriden = true;
 269                         }
 270
 271                         // Load and verify the name format that the HS should use in
 272                         // assertions for this RelyingParty
 273                         NodeList hsNameFormats = ((Element) partyConfig).getElementsByTagNameNS(IdPConfig.originConfigNamespace,
 274                                         "HSNameFormat");
 275                         // If no specification. Make sure we have a default mapping
 276                         if (hsNameFormats.getLength() < 1) {
 277                                 if (nameMapper.getNameIdentifierMappingById(null) == null) {
 278                                         log.error("Relying Party HS Name Format not set.  Add a <HSNameFormat> element to <RelyingParty>.");
 279                                         throw new ServiceProviderMapperException("Required configuration not specified.");
 280                                 }
 281
 282                         } else {
 283                                 // We do have a specification, so make sure it points to a
 284                                 // valid Name Mapping
 285                                 if (hsNameFormats.getLength() > 1) {
 286                                         log.warn("Found multiple HSNameFormat specifications for Relying Party (" + name
 287                                                         + ").  Ignoring all but the first.");
 288                                 }
 289
 290                                 hsNameFormatId = ((Element) hsNameFormats.item(0)).getAttribute("nameMapping");
 291                                 if (hsNameFormatId == null || hsNameFormatId.equals("")) {
 292                                         log.error("HS Name Format mapping not set.  Add a (nameMapping) attribute to <HSNameFormat>.");
 293                                         throw new ServiceProviderMapperException("Required configuration not specified.");
 294                                 }
 295
 296                                 if (nameMapper.getNameIdentifierMappingById(hsNameFormatId) == null) {
 297                                         log.error("Relying Party HS Name Format refers to a name mapping that is not loaded.");
 298                                         throw new ServiceProviderMapperException("Required configuration not specified.");
 299                                 }
 300                         }
 301
 302                         // Load the credential for signing
 303                         String credentialName = ((Element) partyConfig).getAttribute("signingCredential");
 304                         Credential signingCredential = credentials.getCredential(credentialName);
 305                         if (signingCredential == null) {
 306                                 if (credentialName == null || credentialName.equals("")) {
 307                                         log.error("Relying Party credential not set.  Add a (signingCredential) "
 308                                                         + "attribute to <RelyingParty>.");
 309                                         throw new ServiceProviderMapperException("Required configuration not specified.");
 310                                 } else {
 311                                         log.error("Relying Party credential invalid.  Fix the (signingCredential) attribute "
 312                                                         + "on <RelyingParty>.");
 313                                         throw new ServiceProviderMapperException("Required configuration is invalid.");
 314                                 }
 315
 316                         }
 317
 318                         // Initialize and Identity Provider object for this use by this relying party
 319                         identityProvider = new RelyingPartyIdentityProvider(overridenOriginProviderId != null
 320                                         ? overridenOriginProviderId
 321                                         : configuration.getProviderId(), signingCredential);
 322
 323                 }
 324
 325                 public String getProviderId() {
 326
 327                         return name;
 328                 }
 329
 330                 public String getName() {
 331
 332                         return name;
 333                 }
 334
 335                 public IdentityProvider getIdentityProvider() {
 336
 337                         return identityProvider;
 338                 }
 339
 340                 public boolean isLegacyProvider() {
 341
 342                         return false;
 343                 }
 344
 345                 public String getHSNameFormatId() {
 346
 347                         return hsNameFormatId;
 348                 }
 349
 350                 public URI getDefaultAuthMethod() {
 351
 352                         if (overridenDefaultAuthMethod != null) {
 353                                 return overridenDefaultAuthMethod;
 354                         } else {
 355                                 return configuration.getDefaultAuthMethod();
 356                         }
 357                 }
 358
 359                 public URL getAAUrl() {
 360
 361                         if (overridenAAUrl != null) {
 362                                 return overridenAAUrl;
 363                         } else {
 364                                 return configuration.getAAUrl();
 365                         }
 366                 }
 367
 368                 public boolean passThruErrors() {
 369
 370                         if (passThruIsOverriden) {
 371                                 return overridenPassThruErrors;
 372                         } else {
 373                                 return configuration.passThruErrors();
 374                         }
 375                 }
 376
 377                 /**
 378                  * Default identity provider implementation.
 379                  *
 380                  * @author Walter Hoehn
 381                  */
 382                 protected class RelyingPartyIdentityProvider implements IdentityProvider {
 383
 384                         private String providerId;
 385                         private Credential credential;
 386
 387                         public RelyingPartyIdentityProvider(String providerId, Credential credential) {
 388
 389                                 this.providerId = providerId;
 390                                 this.credential = credential;
 391                         }
 392
 393                         /*
 394                          * @see edu.internet2.middleware.shibboleth.common.IdentityProvider#getProviderId()
 395                          */
 396                         public String getProviderId() {
 397
 398                                 return providerId;
 399                         }
 400
 401                         /*
 402                          * @see edu.internet2.middleware.shibboleth.common.IdentityProvider#getSigningCredential()
 403                          */
 404                         public Credential getSigningCredential() {
 405
 406                                 return credential;
 407                         }
 408                 }
 409         }
 410
 411         /**
 412          * Relying party implementation wrapper for relying parties that are federations.
 413          *
 414          * @author Walter Hoehn
 415          */
 416         class RelyingPartyGroupWrapper implements RelyingParty {
 417
 418                 private RelyingParty wrapped;
 419                 private String providerId;
 420
 421                 RelyingPartyGroupWrapper(RelyingParty wrapped, String providerId) {
 422
 423                         this.wrapped = wrapped;
 424                         this.providerId = providerId;
 425                 }
 426
 427                 public String getName() {
 428
 429                         return wrapped.getName();
 430                 }
 431
 432                 public boolean isLegacyProvider() {
 433
 434                         return false;
 435                 }
 436
 437                 public IdentityProvider getIdentityProvider() {
 438
 439                         return wrapped.getIdentityProvider();
 440                 }
 441
 442                 public String getProviderId() {
 443
 444                         return providerId;
 445                 }
 446
 447                 public String getHSNameFormatId() {
 448
 449                         return wrapped.getHSNameFormatId();
 450                 }
 451
 452                 public URL getAAUrl() {
 453
 454                         return wrapped.getAAUrl();
 455                 }
 456
 457                 public URI getDefaultAuthMethod() {
 458
 459                         return wrapped.getDefaultAuthMethod();
 460                 }
 461
 462                 public boolean passThruErrors() {
 463
 464                         return wrapped.passThruErrors();
 465                 }
 466         }
 467
 468         /**
 469          * Relying party implementation wrapper for anonymous service providers.
 470          *
 471          * @author Walter Hoehn
 472          */
 473         protected class UnknownProviderWrapper implements RelyingParty {
 474
 475                 protected RelyingParty wrapped;
 476                 protected String providerId;
 477
 478                 protected UnknownProviderWrapper(RelyingParty wrapped, String providerId) {
 479
 480                         this.wrapped = wrapped;
 481                         this.providerId = providerId;
 482                 }
 483
 484                 public String getName() {
 485
 486                         return wrapped.getName();
 487                 }
 488
 489                 public IdentityProvider getIdentityProvider() {
 490
 491                         return wrapped.getIdentityProvider();
 492                 }
 493
 494                 public String getProviderId() {
 495
 496                         return providerId;
 497                 }
 498
 499                 public String getHSNameFormatId() {
 500
 501                         return wrapped.getHSNameFormatId();
 502                 }
 503
 504                 public boolean isLegacyProvider() {
 505
 506                         return wrapped.isLegacyProvider();
 507                 }
 508
 509                 public URL getAAUrl() {
 510
 511                         return wrapped.getAAUrl();
 512                 }
 513
 514                 public URI getDefaultAuthMethod() {
 515
 516                         return wrapped.getDefaultAuthMethod();
 517                 }
 518
 519                 public boolean passThruErrors() {
 520
 521                         return wrapped.passThruErrors();
 522                 }
 523         }
 524
 525         /**
 526          * Relying party wrapper for Shibboleth &lt;=1.1 service providers.
 527          *
 528          * @author Walter Hoehn
 529          */
 530         class LegacyWrapper extends UnknownProviderWrapper implements RelyingParty {
 531
 532                 LegacyWrapper(RelyingParty wrapped) {
 533
 534                         super(wrapped, null);
 535                 }
 536
 537                 public boolean isLegacyProvider() {
 538
 539                         return true;
 540                 }
 541
 542                 public String getHSNameFormatId() {
 543
 544                         return ((RelyingParty) wrapped).getHSNameFormatId();
 545                 }
 546
 547                 public URL getAAUrl() {
 548
 549                         return ((RelyingParty) wrapped).getAAUrl();
 550                 }
 551
 552                 public URI getDefaultAuthMethod() {
 553
 554                         return ((RelyingParty) wrapped).getDefaultAuthMethod();
 555                 }
 556         }
 557
 558         /**
 559          * Relying party wrapper for providers for which we have no metadata
 560          *
 561          * @author Walter Hoehn
 562          */
 563         class NoMetadataWrapper extends UnknownProviderWrapper implements RelyingParty {
 564
 565                 NoMetadataWrapper(RelyingParty wrapped) {
 566
 567                         super(wrapped, null);
 568                 }
 569
 570                 public String getHSNameFormatId() {
 571
 572                         return ((RelyingParty) wrapped).getHSNameFormatId();
 573                 }
 574
 575                 public URL getAAUrl() {
 576
 577                         return ((RelyingParty) wrapped).getAAUrl();
 578                 }
 579
 580                 public URI getDefaultAuthMethod() {
 581
 582                         return ((RelyingParty) wrapped).getDefaultAuthMethod();
 583                 }
 584         }
 585 }